QMCONasdaqComputer Storage DevicesFiscal year ends March 31
QUANTUM CORP /DE/
Financials through Q1 FY2027, quarter ended Jun 30, 2026Last filing: 10-Q on Aug 11, 2026
$18.31−0.17 (-0.92%)
Close on Oct 19, 2026
- Market cap
- $402.60M
- P/E (TTM)
- –
- Dividend yield
- –
Ownership
Institutional holdings as of Jun 30, 2026, from 13F filings
Held by institutions
36.5%
14M of 39M shares
Institutional holders
59
31 new, 8 sold out
Net institutional buying
13M
In Q2 2026
Insider trades, 12 months
0 buys · 4 sales
Net sold $84.68K
Shares held by institutions
Holders of more than 5%
Latest Schedule 13D (active) or 13G (passive) filed by each holder
| Holder | Shares | % of class | Filing | As of |
|---|---|---|---|---|
| Kevin Genda | 405,978 | 7.70% | 13D (active) | Dec 27, 2024 |
| Alyeska Fund GP, LLC | 2,653,928 | 6.74% | 13G (passive) | Jun 30, 2026 |
| Sina Toussi | 2,488,535 | 6.30% | 13G (passive) | Jun 30, 2026 |
| Oaktree Capital Management LP | 2,011,678 | 5.11% | 13G (passive) | Jun 30, 2026 |
| John Fichthorn | 16,892,735 | 40.00% | 13D (active) amendment | Jun 4, 2026 |
Top institutional holders
13F holdings as of Jun 30, 2026
| Holder | Shares | % of QMCO | Value | Change | % of portfolio |
|---|---|---|---|---|---|
| Alyeska Investment Group, L.P. | 2,653,928 | 6.73% | $29.19M | New | 0.08% |
| Two Seas Capital LP | 2,488,535 | 6.31% | $27.37M | New | 0.54% |
| Oaktree Capital Management LP | 2,011,678 | 5.10% | $22.13M | New | 0.31% |
| Neuberger Berman Group LLC | 1,163,315 | 2.95% | $12.80M | New | 0.01% |
| Ashford Capital Management Inc | 1,039,200 | 2.64% | $10.55M | New | 1.13% |
| Portolan Capital Management, LLC | 1,020,120 | 2.59% | $11.22M | New | 0.42% |
| Marshall Wace, Llp | 713,075 | 1.81% | $7.84M | +675,547 | 0.01% |
| Vanguard Capital Management LLC | 605,541 | 1.54% | $6.66M | +66,266 | 0.00% |
| Manatuck Hill Partners, LLC | 350,000 | 0.89% | $3.85M | New | 1.28% |
| BlackRock, Inc. | 273,030 | 0.69% | $3.00M | +55,498 | 0.00% |
| Cinctive Capital Management LP | 182,769 | 0.46% | $2.01M | New | 0.07% |
| Bank Of America Corp /De/ | 170,130 | 0.43% | $1.87M | +149,645 | 0.00% |
| Geode Capital Management, LLC | 164,600 | 0.42% | $1.81M | +5,421 | 0.00% |
| Renaissance Technologies LLC | 154,516 | 0.39% | $1.70M | New | 0.00% |
| Sona Asset Management (US) LLC | 150,000 | 0.38% | $1.65M | +79,908 | 0.03% |
| Walleye Capital LLC | 120,044 | 0.30% | $1.32M | New | 0.00% |
| Raymond James Financial Inc | 103,836 | 0.26% | $1.14M | New | 0.00% |
| Centiva Capital, LP | 100,000 | 0.25% | $1.10M | New | 0.01% |
| KKM Financial LLC | 90,274 | 0.23% | $960.52K | New | 0.13% |
| Vanguard Fiduciary Trust Co | 89,125 | 0.23% | $980.38K | +8,862 | 0.00% |
Institutional buying and selling by quarter
Positions opened, added to, reduced and closed by 13F filers
| Quarter | Holders | Shares held | % of shares | New / added | Reduced / closed | Shares bought | Shares sold |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 59 | 14M | 36.5% | 31 / 18 | 6 / 8 | 13M | 0M |
| Q1 2026 | 37 | 2M | 4.1% | 10 / 9 | 11 / 11 | 1M | 1M |
| Q4 2025 | 40 | 2M | 5.2% | 19 / 13 | 7 / 7 | 1M | 0M |
| Q3 2025 | 28 | 1M | 2.2% | 3 / 13 | 5 / 9 | 0M | 0M |
| Q2 2025 | 34 | 1M | 2.3% | 13 / 9 | 7 / 8 | 0M | 1M |
| Q1 2025 | 29 | 2M | 4.3% | 7 / 14 | 3 / 23 | 1M | 1M |
| Q4 2024 | 46 | 2M | 4.4% | 27 / 6 | 5 / 7 | 0M | 1M |
| Q3 2024 | 26 | 2M | 5.8% | 26 / 0 | 0 / 0 | 2M | 0M |
Top mutual fund and ETF holders
Latest monthly portfolio reports (Form N-PORT)
| Fund | Shares | % of QMCO | Value | % of fund | As of |
|---|---|---|---|---|---|
| Vanguard Total Stock Market Index Fund | 420,696 | 1.07% | $4.63M | 0.00% | Jun 30, 2026 |
| Vanguard Extended Market Index Fund | 170,893 | 0.43% | $1.88M | 0.00% | Jun 30, 2026 |
| Mango Growth ETF | 90,274 | 0.23% | $960.52K | 0.34% | Jul 31, 2026 |
| Fidelity Extended Market Index Fund | 44,042 | 0.11% | $427.65K | 0.00% | May 31, 2026 |
| iShares Micro-Cap ETF | 38,870 | 0.10% | $427.57K | 0.03% | Jun 30, 2026 |
| Fidelity Total Market Index Fund | 27,532 | 0.07% | $267.34K | 0.00% | May 31, 2026 |
| Fidelity Series Total Market Index Fund | 20,573 | 0.05% | $199.76K | 0.00% | May 31, 2026 |
| Ultra-Small Company Market Fund | 16,240 | 0.04% | $178.64K | 0.12% | Jun 30, 2026 |
| T. Rowe Price Extended Equity Market Index Fund | 11,000 | 0.03% | $121.00K | 0.01% | Jun 30, 2026 |
| Acuitas US Microcap Fund | 10,818 | 0.03% | $119.00K | 0.10% | Jun 30, 2026 |
| Fidelity Nasdaq Composite Index Fund | 8,892 | 0.02% | $86.34K | 0.00% | May 31, 2026 |
| Vanguard Balanced Index Fund | 7,186 | 0.02% | $79.05K | 0.00% | Jun 30, 2026 |
| Vanguard Institutional Total Stock Market Index Fund | 6,766 | 0.02% | $74.43K | 0.00% | Jun 30, 2026 |
| 1290 VT Micro Cap Portfolio | 2,627 | 0.01% | $28.90K | 0.01% | Jun 30, 2026 |
| Victory Extended Market Index Fund | 1,611 | 0.00% | $17.14K | 0.00% | Jul 31, 2026 |
Officers, directors and major owners
People who filed Forms 3, 4 or 5 in the last two years
| Name | Role | Shares owned | % of shares | Latest filing |
|---|---|---|---|---|
| Hugues Meyrath | President & CEO, Director | 118,468 | 0.30% | Jul 7, 2026 |
| James J. Lerner | President & CEO, Director | 113,632 | 0.29% | Apr 23, 2025 |
| Hiral Patel | Chief Accounting Officer | – | – | Sep 8, 2026 |
| Anthony Craythorne | Chief Revenue Officer | 13,522 | 0.03% | Aug 5, 2026 |
| Laura A. Nash | Chief Accounting Officer | 10,770 | 0.03% | Jul 7, 2026 |
| William Hillis White | Chief Financial Officer | 25,000 | 0.06% | Mar 4, 2026 |
| Lewis W. Moorehead | Chief Accounting Officer | 25,150 | 0.06% | Apr 23, 2025 |
| Brian E. Cabrera | SVP Chief Admin Ofcr & Secy | 29,814 | 0.08% | Apr 23, 2025 |
| Kenneth P. Gianella | Chief Financial Officer | 32,402 | 0.08% | Feb 5, 2025 |
| Henk Jan Spanjaard | Chief Revenue Officer | 14,903 | 0.04% | Jan 17, 2025 |
| John Fichthorn | Director, 10% owner | 11,049,541 | 28.04% | Jun 8, 2026 |
| James C. Clancy | Director | 13,000 | 0.03% | Jan 5, 2026 |
| Tony J. Blevins | Director | 13,000 | 0.03% | Jan 5, 2026 |
| John R. Tracy | Director | 27,000 | 0.07% | Jan 5, 2026 |
| Yue Zhou White | Director | 41,139 | 0.10% | Jan 5, 2026 |
| Don Jaworksi | Director | 39,675 | 0.10% | Jan 5, 2026 |
| Technology SPV LLC Dialectic | 10% owner | 11,020,645 | 27.96% | Jun 8, 2026 |
| Investment Management Co Llc Pacific | 10% owner | 0 | – | Apr 17, 2025 |
Insider trades
Common stock transactions reported on Form 4, newest first
| Insider | Date | Transaction | Shares | Price | Value | Shares after |
|---|---|---|---|---|---|---|
| Anthony Craythorne Chief Revenue Officer | Aug 3, 2026 | Sale | −1,478 | $10.73 | $15.86K | 13,522 |
| Hugues Meyrath President & CEO, Director | Jul 2, 2026 | Sale | −6,232 | $10.51 | $65.50K | 118,468 |
| Laura A. Nash Chief Accounting Officer | Jul 2, 2026 | Sale | −260 | $10.51 | $2.73K | 10,770 |
| John Fichthorn Director, 10% owner | Jun 4, 2026 | Conversion | +11,020,645 | $5.19 | $57.20M | 11,020,645 |
| John Fichthorn Director, 10% owner | Jun 4, 2026 | Award | +3,083,975 | $5.19 | $16.01M | 14,104,620 |
| Technology SPV LLC Dialectic 10% owner | Jun 4, 2026 | Conversion | +11,020,645 | $5.19 | $57.20M | 11,020,645 |
| Technology SPV LLC Dialectic 10% owner | Jun 4, 2026 | Award | +3,083,975 | $5.19 | $16.01M | 14,104,620 |
| Laura A. Nash Chief Accounting Officer | Apr 2, 2026 | Sale | −109 | $5.44 | $593 | 11,030 |
| William Hillis White Chief Financial Officer | Mar 4, 2026 | Award | +25,000 | – | – | 25,000 |
| Yue Zhou White Director | Jan 1, 2026 | Award | +12,000 | – | – | 41,139 |
| Anthony Craythorne Chief Revenue Officer | Jan 1, 2026 | Award | +15,000 | – | – | 15,000 |
| John R. Tracy Director | Jan 1, 2026 | Award | +12,000 | – | – | 27,000 |
| Hugues Meyrath President & CEO, Director | Jan 1, 2026 | Award | +62,500 | – | – | 124,700 |
| Don Jaworksi Director | Jan 1, 2026 | Award | +12,000 | – | – | 39,675 |
| Tony J. Blevins Director | Jan 1, 2026 | Award | +12,000 | – | – | 13,000 |
| John Fichthorn Director, 10% owner | Jan 1, 2026 | Award | +12,000 | – | – | 27,271 |
| James C. Clancy Director | Jan 1, 2026 | Award | +12,000 | – | – | 13,000 |
| James C. Clancy Director | Nov 1, 2025 | Award | +1,000 | – | – | 1,000 |
| Tony J. Blevins Director | Nov 1, 2025 | Award | +1,000 | – | – | 1,000 |
| Hugues Meyrath President & CEO, Director | Nov 1, 2025 | Award | +37,500 | – | – | 62,200 |
| Laura A. Nash Chief Accounting Officer | Oct 2, 2025 | Sale | −611 | $10.86 | $6.64K | 11,139 |
| Hugues Meyrath President & CEO, Director | Oct 2, 2025 | Sale | −2,975 | $10.86 | $32.31K | 24,700 |
| Laura A. Nash Chief Accounting Officer | Oct 1, 2025 | Award | +500 | – | – | 11,868 |
| Laura A. Nash Chief Accounting Officer | Oct 1, 2025 | Sale | −118 | $9.91 | $1.17K | 11,750 |
| Laura A. Nash Chief Accounting Officer | Sep 12, 2025 | Sale | −284 | $7.40 | $2.10K | 11,368 |
| John Fichthorn Director | May 1, 2025 | Award | +4,405 | – | – | 15,271 |
| Brian E. Cabrera SVP Chief Admin Ofcr & Secy | Apr 21, 2025 | Award | +1,874 | – | – | 29,814 |
| Brian E. Cabrera SVP Chief Admin Ofcr & Secy | Apr 21, 2025 | Sale | −1,078 | $9.65 | $10.40K | 28,736 |
| James J. Lerner President & CEO, Director | Apr 21, 2025 | Award | +5,828 | – | – | 113,632 |
| James J. Lerner President & CEO, Director | Apr 21, 2025 | Sale | −2,784 | $9.65 | $26.87K | 110,848 |
| Lewis W. Moorehead Chief Accounting Officer | Apr 21, 2025 | Award | +333 | – | – | 25,150 |
| Lewis W. Moorehead Chief Accounting Officer | Apr 21, 2025 | Sale | −179 | $9.65 | $1.73K | 24,971 |
| Investment Management Co Llc Pacific 10% owner | Apr 15, 2025 | Sale | −962,127 | $10.25 | $9.86M | 0 |
| Laura A. Nash Chief Accounting Officer | Apr 2, 2025 | Sale | −136 | $12.85 | $1.75K | 11,652 |
| Kenneth P. Gianella Chief Financial Officer | Feb 3, 2025 | Sale | −1,279 | $21.53 | $27.54K | 32,402 |
| Henk Jan Spanjaard Chief Revenue Officer | Jan 16, 2025 | Sale | −935 | $35.68 | $33.36K | 14,903 |
| Brian E. Cabrera SVP Chief Admin Ofcr & Secy | Jan 16, 2025 | Sale | −1,996 | $35.68 | $71.22K | 27,940 |
| Kenneth P. Gianella Chief Financial Officer | Jan 16, 2025 | Sale | −1,487 | $35.68 | $53.06K | 33,681 |
| James J. Lerner President & CEO, Director | Jan 16, 2025 | Sale | −2,511 | $35.68 | $89.59K | 107,804 |
| Investment Management Co Llc Pacific 10% owner | Jan 3, 2025 | Option exercise | +114,155 | $54.20 | $6.19M | 626,572 |
| Investment Management Co Llc Pacific 10% owner | Jan 3, 2025 | Option exercise | +219,970 | $26.00 | $5.72M | 745,964 |
| Investment Management Co Llc Pacific 10% owner | Jan 3, 2025 | Sale | −92,970 | $61.52 | $5.72M | 652,994 |
| Investment Management Co Llc Pacific 10% owner | Jan 3, 2025 | Option exercise | +63,435 | $6.20 | $393.30K | 716,429 |
| Investment Management Co Llc Pacific 10% owner | Jan 3, 2025 | Sale | −6,393 | $61.52 | $393.30K | 710,036 |
| Investment Management Co Llc Pacific 10% owner | Jan 3, 2025 | Option exercise | +37,536 | $6.20 | $232.72K | 747,572 |
| Investment Management Co Llc Pacific 10% owner | Jan 3, 2025 | Sale | −3,783 | $61.52 | $232.73K | 743,789 |
| Investment Management Co Llc Pacific 10% owner | Jan 3, 2025 | Option exercise | +18,750 | $6.20 | $116.25K | 762,539 |
| Investment Management Co Llc Pacific 10% owner | Jan 3, 2025 | Sale | −1,889 | $61.52 | $116.21K | 760,650 |
| Investment Management Co Llc Pacific 10% owner | Jan 3, 2025 | Option exercise | +224,059 | $6.20 | $1.39M | 984,709 |
| Investment Management Co Llc Pacific 10% owner | Jan 3, 2025 | Sale | −22,582 | $61.52 | $1.39M | 962,127 |
| Investment Management Co Llc Pacific 10% owner | Jan 3, 2025 | Sale | −100,578 | $61.52 | $6.19M | 525,994 |
| Kenneth P. Gianella Chief Financial Officer | Nov 8, 2024 | Sale | −1,332 | $4.43 | $5.90K | 35,168 |
| Brian E. Cabrera SVP Chief Admin Ofcr & Secy | Nov 8, 2024 | Sale | −2,118 | $4.43 | $9.38K | 30,227 |
| James J. Lerner President & CEO, Director | Nov 8, 2024 | Sale | −3,681 | $4.43 | $16.31K | 110,315 |
| Laura A. Nash Chief Accounting Officer | Nov 8, 2024 | Sale | −328 | $4.43 | $1.45K | 11,788 |
| Brian E. Cabrera SVP Chief Admin Ofcr & Secy | Nov 8, 2024 | Sale | −291 | $4.45 | $1.29K | 29,936 |
| Henk Jan Spanjaard Chief Revenue Officer | Nov 8, 2024 | Sale | −218 | $4.43 | $966 | 15,838 |
| Kenneth P. Gianella Chief Financial Officer | Nov 8, 2024 | Sale | −2,590 | $4.43 | $11.47K | 33,910 |
| Laura A. Nash Chief Accounting Officer | Nov 8, 2024 | Sale | −685 | $4.43 | $3.03K | 11,431 |
| James J. Lerner President & CEO, Director | Nov 8, 2024 | Sale | −6,505 | $4.43 | $28.82K | 107,491 |
Awards, option exercises, tax withholding and gifts are shown alongside open-market buys and sales. Each name links to the filing on SEC EDGAR.
Planned insider sales
Notices of proposed sale filed on Form 144 before shares are sold
| Seller | Filed | Shares | Market value | Planned sale | Acquired through |
|---|---|---|---|---|---|
| Investment Management Co Llc Pacific Shareholder | Apr 15, 2025 | 962,127 | $11.73M | Apr 15, 2025 | Cashless exercise of warrants |
| Brian E. Cabrera Officer | Nov 3, 2023 | 5,543 | $2.47K | Nov 2, 2023 | Restricted Stock Units |
| James J. Lerner Officer | Oct 11, 2023 | 36,045 | $23.97K | Oct 10, 2023 | Restricted Stock Units |
| Laura A. Nash Officer | Oct 6, 2023 | 888 | $542 | Oct 4, 2023 | Restricted Stock United |
| Brian E. Cabrera Officer | Oct 6, 2023 | 942 | $575 | Oct 4, 2023 | Restricted Stock Units |
| John Hurley Officer | Sep 6, 2023 | 42,662 | $26.88K | Sep 5, 2023 | Restricted Stock Units |
| Laura A. Nash Officer | Jul 12, 2023 | 3,600 | $3.89K | Jul 10, 2023 | Restricted Stock Units |
| John Hurley Officer | Jul 12, 2023 | 22,681 | $24.50K | Jul 10, 2023 | Restricted Stock Units |
| James J. Lerner Officer | Jul 12, 2023 | 158,893 | $171.60K | Jul 10, 2023 | Restricted Stock Units |
| Brian E. Cabrera Officer | Jul 12, 2023 | 15,674 | $16.93K | Jul 10, 2023 | Restricted Stock Units |
| Brian E. Cabrera Officer | May 4, 2023 | 30,915 | $29.83K | May 2, 2023 | Release of Restricted Stock Units |